Method for realizing user interface using camera and mobile communication terminal for the same

ABSTRACT

A method for realizing a user interface using a camera module and a mobile communication terminal for the same. If a user makes a predetermined motion in a state in which the camera module of the mobile communication terminal is activated, the mobile communication terminal performs a predetermined action according to the motion pattern by recognizing the user motion and patterning the motion. In this case, the action performed according to the motion pattern corresponds to mouse control in a mouse mode, game control in a game mode, and character input in a character input mode.

PRIORITY

This application claims priority to an application entitled “Method for Realizing User Interface Using Camera and Mobile Communication Terminal For The Same” filed in the Korean Intellectual Property Office on Jun. 20, 2005 and assigned Serial No. 2005-53254, the contents of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method for realizing a user interface using a camera module and a mobile communication terminal for the same.

2. Description of the Related Art

Recently, as a mobile communication terminals have become wide spread, a variety of services have become available such as a traffic information service for informing a user who is driving a vehicle of traffic conditions through the screen of the mobile communication terminal, a MYBELL service (enabling the user to register the user's own ringing sound in the mobile communication terminal and to use the ringing sound), and a mobile telephone call service for notifying the arrival of a message on a voice mail-box. The user of the mobile communication terminal can receive a variety of convenient functions in addition to an intrinsic telephone communication function because the mobile communication terminal is designed to receive a variety of additional services, such as a voice mail-box function and a specific information-receiving function, from a service provider.

As such services and additional functions have become increasingly expanded, a mobile communication system provides an Integrated Services Digital Network (IDSN)-level multimedia service with a data rate of several Mb/s, as well as voice and data. A terminal adaptable for the mobile communication system described above has been developed. A mobile communication terminal equipped with a camera capable of storing an image obtained by photographing a subject is introduced as one example of the development.

As the mobile communication terminal becomes popularized, a user can take a picture regardless of time and location using the mobile communication terminal. In addition, since the mobile communication terminal always carried by a user is equipped with a camera, the user may photograph an emergent situation or may take a picture whenever it is required.

Accordingly, it is desirable to utilize the mobile communication terminal equipped with the camera with more effect and through various additional schemes based on the above described advantages. In addition, it is necessary to add a variety of services and additional functions to the mobile communication terminal equipped with the camera in order to enhance the usage efficiency of the mobile communication terminal and satisfy a variety of user demands. For example, an optical character recognition (OCR) function enables the mobile communication terminal to recognize phone numbers and data printed in a document by using the camera of the mobile communication terminal.

However, although a variety of applications are available when the mobile communication terminal is equipped with the camera, the use of the camera of the mobile communication terminal is limited for some functions, such as the OCR function.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a method for realizing a user interface using a camera module and a mobile communication terminal for the same.

To accomplish the above objects, there is provided a mobile communication terminal including a camera module to which a user motion is input; a memory for storing control commands, according to at least one motion pattern or characters according to predetermined traces; and a controller for patterning a user motion if the user motion is input from a user, reading out a control command corresponding to a user motion pattern from the memory, and performing the control command.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a block diagram illustrating a structure of a mobile communication terminal according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a method for realizing a user interface using a camera module according to a first embodiment of the present invention;

FIG. 3 is a flowchart illustrating a method for realizing a user interface using a camera module according to a second embodiment of the present invention; and

FIG. 4 is a flowchart illustrating a method for realizing a user interface using a camera module according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same or similar components in drawings are designated by the same reference numerals as far as possible although they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention unclear.

According to an embodiment of the present invention, it is possible to realize a user interface module using a camera module in a mobile communication terminal. If a user makes a predetermined motion during a state in which the camera module of the mobile communication terminal is activated, the mobile communication terminal recognizes and patterns the user motion and performs a predetermined action according to the motion pattern.

The action performed according to the motion pattern may correspond to the control of a mouse in a mouse mode or the control of a game in a game mode. In addition, the action may correspond to the input of a character in a character inputting mode.

Hereinafter, a block diagram illustrating the structure of a mobile communication terminal will be described with reference to FIG. 1.

FIG. 1 is a block diagram illustrating a structure of a mobile communication terminal 100 according to an embodiment of the present invention. The mobile communication terminal 100 includes a Radio Frequency (RF) module 110, a base band processing module 120, a user interface module 130, a audio processing module 140, a controller 150, a memory 160, a display 170, a motion recognition module 180, a camera module 190, and a character recognition module 200.

The controller 150 of the mobile communication terminal 100 provides overall control for the mobile communication terminal. In addition, the controller 150 controls each module shown in FIG. 1 in order to realize a user interface for operating the camera module according to a preferred embodiment of the present invention.

In a more detailed description of the operation of the controller 150, the controller 150 activates the camera module 190, recognizes a user motion through the camera module 190, and patterns the user motion.

The controller 150 reads out a mouse controlling command corresponding to a user motion pattern from the memory 160 in the mouse mode according to a first embodiment of the present invention. The user moves his/her hand according to a motion pattern within the photographic field of the camera module 190 of the mobile communication terminal 100. The motion pattern is preliminarily stored in the memory 160 and a control command corresponding to the motion pattern is also stored in the memory 160. If the user carries out the action of a predetermined motion pattern based on the storage of the motion pattern, the mobile communication terminal performs the control command corresponding to the motion pattern. For example, the user may carry out a click action or roll a mouse wheel as if the user actually handles the mouse. The controller 150 performs a control action such that the mouse control command, identical to that which occurs when the user actually clicks the mouse or rolls the mouse wheel, is issued with respect to the corresponding motion.

The controller 150 reads out from the memory 160 a game controlling command corresponding to a user motion in the game mode according to a second embodiment of the present invention. For example, if the user makes motions such as gripping, hitting, or moving by using his/her hand as if the user were actually playing a game, the controller 150 patterns the user motion and reads out from the memory 160 a game controlling command corresponding to the user motion pattern. The game controlling command is stored in the memory 160 in the same way that the motion pattern, corresponding to the game controlling command, is stored in the memory 160.

In addition, the controller 150 according to a third embodiment of the present invention reads out a character according to a trace corresponding to the user motion pattern so as to display the character on the display 170 in the character input mode. The user moves his/her hand within the photographic field of the camera module 190 of the mobile communication terminal 100 such that the motion pattern is created. For example, the user actually may move his/her hand as if he/she actually writes characters. Then, the controller 150 reads out from the memory 160 a character according to the trace corresponding to the user motion pattern so as to display the character on the display 170. This character inputting function is mainly used for a Short Message Service (SMS) message transmitting function, a memo pad, etc.

The camera module 190 photographs user movement (i.e., user motion) within the photographic field so as to provide the photographed image of the user motion to the controller 150, the motion recognition module 180, and the character recognition module 200. The motion recognition module 180 recognizes and patterns the user motion and then provides the user motion to the controller 150. In addition, the character recognition module 200 creates a trace corresponding to the user motion so as to provide the user motion to the controller 150.

The memory 160 includes a read only memory (ROM), a random access memory, and a voice memory used for storing a plurality of programs and information required when the operation of the mobile communication terminal 150 is controlled. In addition, the memory 160 stores control commands according to at least one motion pattern and characters according to predetermined traces according to the present invention.

In addition, the RF module 110 transmits/receives an RF signal to/from a base station through an antenna. The RF module 110 converts a received signal into an intermediate frequency (IF) signal and outputs the converted signal to the base band processing module 120. The RF module 110 converts an IF signal input from the base band processing module 120 into an RF signal and transmits the RF signal. In addition, the base band processing module 120 is a base band analog Application Specific Integrated Circuit (ASIC) providing an interface between the controller 150 and the RF module 110. The base band processing module 120 converts a base band digital signal input from the controller 150 into an analog IF signal so as to apply the analog IF signal to the RF module 110, and converts an analog IF signal input from the RF module 100 into a base band digital signal so as to apply the base band digital signal to the controller 150.

The audio processing module 140 outputs received audio data after converting the audio data into audible sound through a speaker under the control of the controller 150. The audio processing module 140 converts an audio signal input from a user through a microphone into an electrical signal to be transmitted to the controller 150. The user interface 130 includes a plurality of numeric keys and functions and outputs key-input data corresponding to a key pressed by the user to the controller 150. The display 170 generally includes a liquid crystal display (LCD) and displays a variety of messages and icons under the control of the controller.

FIGS. 2 to 4 are flowcharts illustrating a control procedure employed for realizing the user interface using the camera module according to the embodiments of the present invention, and FIG. 2 illustrates a case in which the user interface is realized using the camera module in a mouse mode.

Referring to FIG. 2, under the mouse mode, the controller 150 displays a cursor on a screen of the display 170 and activates the camera module 190 in step 310. In this case, the cursor may be displayed or not. Then, the controller 150 determines if a user motion is input in step 320. If the user motion is input, the controller 150 goes into step 330 and controls the motion recognition module 180 to pattern the user motion. If the motion recognition module 180 patterns the user motion to be provided to the controller 150, the controller 150 in step 340 reads out from the memory 160 a mouse controlling command corresponding to the motion pattern. Thereafter, the controller 150 executes the mouse controlling command according to the read-out mouse controlling command in step 350. For example, if the user makes a mouse click motion using his/her hand as if the user actually clicks the mouse, the controller 150 performs a control motion corresponding to a case in which the user clicks a menu item or an Internet icon for which a cursor displayed on the screen of the display 170 is positioned. If the user performs a motion of rolling the mouse wheel as if the user actually rolls the mouse wheel, the controller 150 moves the cursor displayed on the screen of the display 170 correspondingly to the mouse wheel turning motion.

FIG. 3 illustrates a case in which the user interface is realized using the camera module in a game mode.

Referring to FIG. 3, under the game mode, the controller 150 activates the camera module 190 in step 410. Thereafter, the controller 150 determines if the user motion is input in step 420. If the user motion is input, the controller 150 goes into step 430 and controls the motion recognition module 180 to pattern the user motion. If the motion recognition module 180 patterns the user motion to be provided to the controller 150, the controller 150 in step 440 reads out from the memory 160 a game controlling command corresponding to the motion pattern. Thereafter, the controller 150 executes the game controlling command according to the read-out game controlling command in step 450. For example, if the user makes motions such as gripping, hitting, or moving by using his/her hand as if the user is actually playing a game, the controller 150 reads out from the memory 160 the game controlling command for a corresponding motion and executes the game controlling command.

FIG. 4 illustrates a case in which the user interface is realized using the camera module in a character inputting mode.

Referring to FIG. 4, under the game mode, the controller 150 activates the camera module 190 in step 510. Thereafter, the controller 150 determines if a user motion is input in step 520. If the user motion is input, the controller 150 goes into step 530 and controls the character recognition module 200 to create the trace corresponding to the user motion. If the character recognition module 200 creates the trace corresponding to the user motion to be provided to the controller 150, the controller 150 reads out from the memory the appropriate one of 160 available characters corresponding to the trace in step 540 and displays the read-out characters in step 550. This character inputting function can be usefully used when a Short Message Service (SMS) message is written or when a schedule is made.

As described above, according to the present invention, a user interface module is realized by using a camera module included in a mobile communication terminal, so that it is possible to expand an application function of the camera module and improve user convenience for the usage of the mobile communication terminal.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Consequently, the scope of the invention should not be limited to the embodiments, but should be defined by the appended claims and equivalents thereof. 

What is claimed is:
 1. A mobile communication terminal comprising: a camera module to which a user motion is input; a memory for storing at least one control command corresponding to at least one motion pattern and storing at least one character pattern according to predetermined traces; and a controller for activating the camera module according to a current mode type, patterning the user motion if the user motion is input from a user through the activated camera module, reading out a control command corresponding to the user motion pattern from the memory according to the current mode type, and performing the control command.
 2. The mobile communication terminal as claimed in claim 1, wherein the controller reads out from the memory a mouse controlling command corresponding to the user motion pattern when the current mode type is a mouse mode.
 3. The mobile communication terminal as claimed in claim 2, wherein the controller displays a cursor in the mouse mode.
 4. The mobile communication terminal as claimed in claim 1, wherein the controller reads out from the memory a game controlling command corresponding to the user motion pattern when the current mode type is a game mode.
 5. A method for realizing a user interface using a camera in a mobile communication terminal including a memory for storing at least one control command according to at least one motion pattern and storing at least one character pattern according to predetermined traces, the method comprising: activating a camera module according to a current mode type; receiving a user motion; patterning the user motion if the user motion is input from a user through the activated camera module; and executing a control command by reading out from the memory the control command corresponding to the user motion pattern according to the current mode type.
 6. The method as claimed in claim 5, wherein executing the control command includes performing a mouse controlling command corresponding to the user motion pattern by reading out the mouse controlling command from the memory when the current mode type is a mouse mode.
 7. The method as claimed in claim 5, wherein executing the control command includes performing a control command corresponding to the user motion pattern by reading out the mouse controlling command from the memory when the current mode type is a game mode.
 8. The mobile communication terminal as claimed in claim 1, wherein the controller creates a trace corresponding to the user motion pattern and reads out a character corresponding to the trace from the memory when the current mode type is a character input mode.
 9. The method as claimed in claim 5, wherein executing the control command includes creating a trace corresponding to the user motion pattern and reading out a character corresponding to the trace from the memory when the current mode type is a character input mode. 